Mosquitto not working on Virtual Box

I am restoring an existing working HA install (currently on a NAS) that uses mosquitto onto a VB on OSX however I am getting errors on the VB install and I can’t subscribe to anything

example errors…

1629185425: New client connected from 172.30.33.3 as texecom2mqtt (p2, c1, k10, u'mqttuser1').
1629185470: New connection from 172.30.32.1 on port 1883.
401: Unauthorized1629185470: Socket error on client <unknown>, disconnecting.
1629185590: New connection from 172.30.32.1 on port 1883.
1629185590: Socket error on client <unknown>, disconnecting.
1629185710: New connection from 172.30.32.1 on port 1883.
1629185710: Socket error on client <unknown>, disconnecting.
1629185830: New connection from 172.30.32.1 on port 1883.
401: Unauthorized1629185832: Socket error on client <unknown>, disconnecting.
1629185952: New connection from 172.30.32.1 on port 1883.

All users and passwords etc same as before but I cannot connect to the broker

Any thoughts gratefully received